Coke-oven heating flue



Mr-Ch 25, 1930'. jc, E1 UNDERWQQD ET Al, A 1,751,775

COKE OVEN HEATING FLUI;

FiledvApr'il 27, `192s ZL l lNVENTcSnS l v/aar'af'l Mfmaod 'l l'f QO mman;

Patented Mar. 25, 1930 UNITED STATES PATENT OFFICE CHARLES E. UNDERWOOD AND JAMES A. BEATTY, F BETHLEHEM, PENNSYLVANIA,

- ASSIGNORS TO BETHLEHEM STEEL COMPANY conn-OVEN HEATING FLUE Application filed April 27,

Our invention relates to an improvement in the means normally used to bridge the ends of the heating-flue walls of a by-product coke oven, and is'more particularly directed to the flash plates which cover the ends of the heating-flue walls and are held in position by the vertical buckstaysof the oven. Hitherto-it' has been found diflicult tomaintain proper joints ybetween the masonry of the flue walls and the flash plates bridging them, due to their diterent coelticients of expansion.

Furthermore, the use of discharge rammers and the openingand closing of the oven doors contribute to the loosening of the joints between the flash plates and the masonry Walls, the constant repair of which adds materially to the operating expenses of the oven.

An object of this invent-ion is, therefore, to design a flash plate ofimproved design,

to insure a substantially gas. tight joint in the end masonry of the heating lues.

A'further object of ,this invention .is to` provide a masonry constructio at the end of the heating f lues, wherein the n rmal joints are suitably masked' for 'the purpose of preventing gas leakage therefrom. j

A further object of this invention is to protect the masonry at the ends of the flue side walls from abrasion by the discharge rammer: l 'In the drawings:

Fig. 1 is a vertical elevation of a portion of a coke oven battery;

Fig. 2 is a transverse section along. line II-II of Fig. 1 of the coking chamber and its adjacent heating flues;

Fig. 3 is the upper portion of two adja- .cent coking chambers shown in elevation; and,

Fig. 4 is a part sectionalong the line IV-IV of Fig.

In these tlgureswe show a coking chamber l 11, heating flue walls 12, defining the lues or combustion chambers 13 oneach side of said coking chamber. We also show the' llller bricks 14, terminalportions 2() of the side Walls, center bricks and vertically superposed flash plate sections 15. l

Referring vto Fig. 2'it will be seen that the flash plates 15 include inwardly projecting 1926. SerialNo. 104,894.'

engage the aforesaid inwardly projectingv flanges 16 of said flash plates. Tongue andl groove vertical joints are provided between the terminal bricks 2O and the center bricks 25; These joints are broken in alternate courses in the usual manner.

The position of' the filler bricks 14 out- I Wardly of the verticaly joints is suchas to oppose any leaka flues therethrough. The flash plates embrace the fillenbrick and the terminal bricks of the 0e of gases from the heating sidewalls, being maintained securely against the terminal bricks by the engagement of the usual' vertical buckstays in the recesses 18 provided in vthe flash plates. of clearness said buckstays have not been (For the sake shown onthe drawing.) Furthermore, the

inwardly projecting flanges 16 of?- the flash plates serve to protect the edges of the side walls from abrasion and fracture by the coke oven rammer and are flashed into suitable recesses in the terminal bricks 20. The external form a seat for the oven doors.

. From the above, it is evident that leakage y ofgases from the heating flues is etectively opposed. In theevent of gasleaking through the tongue and groove joints between the center and terminal bricks, it is prevented from further escape by the'liller bricksl 14, and in the event that gas passes along the line of ,Contact between the filler brick 14 and the terminal bricks 20, it would be finally checked by reason of the flash plate 15 which mbligaces the filler brick andthe terminal end r1c s. v

While we have shown our invention in but one form, it will be obvious to those skilled 1n the art that it is not so limited, but is sus-` ceptible ofvarious other changes and modications without departing from. the. spirit thereof, and we desire, therefore, that only such limitations shall be placed thereuponas are imposed by the prior art or as are specitically set forth in the appended claims.

Having thus described our invention what we claim as new and desire to secure by Letters Patent is: i

l. In a coke oven heating flue, side walls and end bricks therebetween, the outer faces of the center bricks being substantially flush with the ends of the side walls, filler bricks disposed outwardly of the center bricks and masking the joints between the sidewalls and center bricks, and ashplates embracing the filler bricks and the terminal portions of the side walls.

2. In a coke oven heating flue, side walls and end bricks therebetween, the outer faces of the center bricks being substantially flush with the ends of the sidewalls, filler bricks disposed outwardly of the 'center bricks overlappinff the joints between the sidewalls and center bricks, and flash plates embracing the gg ller bricks, having inwardly projecting V flanges overlapping the line of contact between the terminal portions of the side walls and the filler bricks, the'terminal portions of the side walls being recessed to receive the overlapping portions of the flanges.

In a coke oven heating flue, side walls and end'bricks therebetween, the outer faces of the center bricks being substantially flush with the ends of the side walls, liller bricks disposed outwardly of the center bricks overlapping the joints lbetween the side walls and center bricks, and flash plates embracing the filler bricks, having inwardly projecting flanges overlapping the.

line of contact between the terminal portions of the side walls 4and the filler bricks,

i the terminal portions of the side walls being recessed to receive the overlapping portions of the flanges, the flanges being shaped to V o provide a seat for an oven closure.

4. In a coke oven heating flue, side walls, center bricks. whose side: faces engage the inner faces of the ends of the side walls, filler bricks engaging the ends of the side walls and the outer faces of the center bricks, and masking the oints between the side walls and. center bricks, and flash plates embracing the filler bricks and thev terminal portions of the side walls. j In testimony whereof I hereuntoaiiix my signature this 22nd day of April, 1926.

. CHARLES E. UNDERVOOD.

In testimony whereof I hereunto affix my signature this 22nd day of April, 1926. JAMES A. BEAT'IY.

thatftfh'vefs'aid` ,Letters.Patent should b read with ,these correlctionsfth'rein that the',sme'=may.=conform rio 'then record ofthcasefAi-n .the PatenrtOffice.

" o Sigedfisijdiseqlodfthis22nd'igiy ofmApiil, ASD. 1930.4

" Acting Commissioner of Patients.I 

